ZMIME
Comparison · 3 models · Updated Oct 4, 2026

Gemini Robotics-ER 1.6 Preview vs GPT-4.1 mini vs Mistral Medium 3

GPT-4.1 mini comes out ahead, 62 to 50 and 47 on our weighted score, and it is the cheaper option too.

  1. Google

    Gemini Robotics-ER 1.6 Preview

    Released Apr 14, 2026

    50/100
    • ECI—
    • Price$1.00 / $5.00
    • Context131K
    Full specs Remove Gemini Robotics-ER 1.6 Preview
  2. Our pick

    OpenAI

    GPT-4.1 mini

    Released Apr 14, 2025

    62/100
    • ECI135.0
    • Price$0.40 / $1.60
    • Context1.05M
    Full specs Remove GPT-4.1 mini

  3. Mistral AI

    Mistral Medium 3

    Released May 7, 2025

    47/100
    • ECI134.1
    • Price$0.40 / $2.00
    • Context131K
    Full specs Remove Mistral Medium 3
01 — Verdict

GPT-4.1 mini is our pick

GPT-4.1 mini is the better all-round choice, scoring 62/100 against Gemini Robotics-ER 1.6 Preview (50) and Mistral Medium 3 (47). It leads on price and context window. Gemini Robotics-ER 1.6 Preview wins on inputs & features. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.

  • CapabilityNot enough dataNo independent benchmark covers every model here yet
  • Lowest priceGPT-4.1 miniGPT-4.1 mini $0.70 · Mistral Medium 3 $0.80 · Gemini Robotics-ER 1.6 Preview $2.00 per 1M tokens (3:1 blend)
  • Longest contextGPT-4.1 miniGPT-4.1 mini 1,047,576 · Gemini Robotics-ER 1.6 Preview 131,072 · Mistral Medium 3 131,072 tokens
  • Widest inputsGemini Robotics-ER 1.6 PreviewGemini Robotics-ER 1.6 Preview: Text, Images, Audio, Video · GPT-4.1 mini: Text, Images, PDFs · Mistral Medium 3: Text, Images
  • Self-hostingNo open weightsAll three are available only through APIs
How the score is built
MeasureWeightGemini Robotics-ER 1.6 PreviewGPT-4.1 miniMistral Medium 3
Price50%365754
Inputs & features30%907050
Context window20%246124
Overall100%50/10062/10047/100

Left out because at least one model lacks the data: capability. The remaining weights were rescaled.

02 — Side by side

Every spec in one table

Highlighted cells lead their row. Dashes mean the data is not published.

Gemini Robotics-ER 1.6 Preview vs GPT-4.1 mini vs Mistral Medium 3 specifications side by side
SpecificationGemini Robotics-ER 1.6 PreviewGoogleGPT-4.1 miniOpenAIMistral Medium 3Mistral AI
Capability
Capabilities Index (ECI)—135.0 (best)134.1
ECI rank—#115 of 148 (best)#117 of 148
GPQA DiamondGraduate-level science questions—65.9% (best)59.5%
FrontierMath Tiers 1–3Research-level mathematics—6.7%—
OTIS Mock AIME 2024–2025Competition mathematics—44.7% (best)32.2%
SimpleQA VerifiedShort factual questions—12.7%—
Price per million tokens
Input$1.00$0.40 (best)$0.40 (best)
Output$5.00$1.60 (best)$2.00
Cached input—$0.10—
Blended (3:1)$2.00$0.70 (best)$0.80
Long-context rateSame rateSame rateSame rate
Price sourceMedian of 1 providersOfficial OpenAI APIOfficial Mistral API
Limits
Context window131,072 tokens1,047,576 tokens (best)131,072 tokens
Max output65,536 tokens32,768 tokens131,072 tokens (best)
Inputs and features
TextYesYesYes
ImagesYesYesYes
PDFsNoYesNo
AudioYesNoNo
VideoYesNoNo
ReasoningYesNoNo
Tool callingYesYesYes
Structured outputYesYesNo
Availability
WeightsProprietaryProprietaryProprietary
API model ID—gpt-4.1-minimistral-medium-2505
API providers124 (best)5
ReleasedApr 14, 2026Apr 14, 2025May 7, 2025
Knowledge cutoffJan 2025Apr 2024May 2025
03 — Cost

What would a month cost?

Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.

  • Gemini Robotics-ER 1.6 Preview$20.00
  • GPT-4.1 mini$7.20
  • Mistral Medium 3$8.00
04 — Questions

Which should you choose?

Which is better: Gemini Robotics-ER 1.6 Preview, GPT-4.1 mini or Mistral Medium 3?

GPT-4.1 mini is the better all-round choice, scoring 62/100 against Gemini Robotics-ER 1.6 Preview (50) and Mistral Medium 3 (47). It leads on price and context window. Gemini Robotics-ER 1.6 Preview wins on inputs & features. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.

Which is cheaper, Gemini Robotics-ER 1.6 Preview, GPT-4.1 mini or Mistral Medium 3?

GPT-4.1 mini is cheaper at $0.40 input / $1.60 output per million tokens (official OpenAI API price). Mistral Medium 3 costs $0.40 input / $2.00 output per million tokens (official Mistral API price); Gemini Robotics-ER 1.6 Preview costs $1.00 input / $5.00 output per million tokens (median across 1 API provider). At a typical mix of three input tokens to one output token, that is $0.70 per million tokens for GPT-4.1 mini versus $0.80 for Mistral Medium 3 (1.1× as much) and $2.00 for Gemini Robotics-ER 1.6 Preview (2.9× as much).

Which scores higher on benchmarks?

There is no independent benchmark that covers all three models yet. Gemini Robotics-ER 1.6 Preview has not been scored yet, GPT-4.1 mini has an ECI of 135.0 and Mistral Medium 3 has an ECI of 134.1.

Which is better for coding?

There are no published SWE-bench Verified results for Gemini Robotics-ER 1.6 Preview, GPT-4.1 mini and Mistral Medium 3 yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. All three support tool calling for agent workflows.

Which has the bigger context window?

GPT-4.1 mini has the largest context window at 1,047,576 tokens, against 131,072 for Gemini Robotics-ER 1.6 Preview and 131,072 for Mistral Medium 3. Maximum output per response: Gemini Robotics-ER 1.6 Preview up to 65,536, GPT-4.1 mini up to 32,768, Mistral Medium 3 up to 131,072 tokens.

Which can read images, PDFs, audio or video?

Gemini Robotics-ER 1.6 Preview accepts text, images, audio and video; GPT-4.1 mini accepts text, images and PDFs; Mistral Medium 3 accepts text and images. Gemini Robotics-ER 1.6 Preview handles the widest range of inputs.

Are any of these open source?

No. Gemini Robotics-ER 1.6 Preview, GPT-4.1 mini and Mistral Medium 3 are proprietary and only available through APIs and apps.

Which is newer?

Gemini Robotics-ER 1.6 Preview is the newest, released Apr 14, 2026. Mistral Medium 3 came out May 7, 2025; GPT-4.1 mini came out Apr 14, 2025. Knowledge cutoff: Gemini Robotics-ER 1.6 Preview Jan 2025, GPT-4.1 mini Apr 2024, Mistral Medium 3 May 2025.

How do you decide the winner?

Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Oct 4, 2026.

05 — Keep comparing

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